CN214871340U

CN214871340U - Self-adaptive damping mechanism for straw board machine

Info

Publication number: CN214871340U
Application number: CN202120101889.8U
Authority: CN
Inventors: 贾智恒; 郝宁; 李志敏; 马占江; 周建勋; 高啸; 卢佳; 张会君; 饶小峰
Original assignee: Shanxi Pingyang Industry Machinery Co Ltd
Current assignee: Shanxi Pingyang Industry Machinery Co Ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-11-26
Anticipated expiration: 2031-01-15

Abstract

The utility model relates to a straw board machine technical field specifically is an adaptive damping mechanism for on straw board machine, aims at solving the technical problem that current straw board machine roller type carries platform length longer, the waste of straw board is more serious. The following technical scheme is adopted: the device comprises an oil cylinder arranged on a frame of the straw board machine, wherein a piston rod of the oil cylinder is fixedly connected with a pressing plate which is horizontally arranged and is adjacent to an outlet of a forming cavity of the straw board machine; the automatic straw board forming machine is characterized by further comprising a sensor and a PLC (programmable logic controller), wherein the sensor is used for detecting the discharging length of the straw board forming cavity, the sensor and the oil cylinder are connected with the PLC, and the PLC receives a detection signal of the sensor so as to control the output pressure of the oil cylinder.

Description

Self-adaptive damping mechanism for straw board machine

Technical Field

The utility model relates to a straw board machine technical field specifically is a self-adaptation damping mechanism for on straw board machine.

Background

The straw board is made of natural rice straw as main raw material and through high-temp. high-pressure forming and sticking surface paper on its surface. The production line of the straw board machine is a foreign technology introduced in the last 80 th century, and the production process is as follows: the straw which is screened is heated and then is extruded into a molding cavity with fixed thickness to be molded, the molded straw board is pushed by the straw which is continuously extruded at the rear part to move forward, the molded straw board at the front part passes through the molding cavity and then is arranged on the roller type conveying table, and the friction force between the molded straw board and the roller type conveying table provides resistance for the molding of the rear straw board so as to improve the strength of the rear straw board, so that the strength of the produced straw board reaches the standard. Because the friction force between the front grass plate and the roller type conveying table is generated by the gravity of the grass plate, the friction force is increased along with the length of the side of the grass plate extending out of the forming cavity. This has two problems: firstly, in order to ensure the molding strength of the rear grass plate, the length of the roller type conveying table is set to be at least 30m, so that the length of the whole production line is 85m, and the requirement on a factory building is high; secondly, when the machine is started to produce the straw boards, the resistance of the straw boards between the top 20 and 30 meters is insufficient during production, so that the strength cannot reach the corresponding standard, and the straw boards are wasted, the board width is 1200mm according to the production of the straw boards with the board thickness of 58mm, the weight of the produced straw boards is 23-25 kg/m, the production line needs to be maintained and overhauled every 5 days generally, and the amount of straw wasted every year exceeds 38 t.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the current straw board machine roller type and carry the technical problem that platform length is longer, the straw board is extravagant more seriously.

The utility model provides a technical scheme that its technical problem adopted is:

a self-adaptive damping mechanism for a straw board machine comprises an oil cylinder arranged on a rack of the straw board machine, wherein a piston rod of the oil cylinder is fixedly connected with a pressing plate, the pressing plate is horizontally arranged and is adjacent to an outlet of a forming cavity of the straw board machine (the oil cylinder is adjacent to the forming cavity, so that waste of straw boards can be reduced to the greatest extent); the automatic straw board forming machine is characterized by further comprising a sensor and a PLC (programmable logic controller), wherein the sensor is used for detecting the discharging length of the straw board forming cavity, the sensor and the oil cylinder are connected with the PLC, and the PLC receives a detection signal of the sensor so as to control the output pressure of the oil cylinder.

Furthermore, the pressure plate is connected with two oil cylinders distributed along the width direction of the pressure plate.

Further, the width of the pressing plate is equal to the width of the molding cavity of the straw board machine.

Further, the sensor adopts a laser sensor.

Furthermore, the oil cylinder is provided with an oil tank, a servo overflow valve is arranged on the oil tank, oil in the oil tank is supplied to the oil cylinder through the servo overflow valve, and the PLC controls the opening size of the servo overflow valve.

The utility model has the advantages that:

1) the utility model provides a self-adaptation damping mechanism for on straw board machine, the exit in the shaping chamber is adjacent to be equipped with hydro-cylinder driven clamp plate, can exert pressure to the straw board in the place ahead when the shaping chamber just has just been discharged, increase the frictional force between straw board in the place ahead and the roller conveyor platform, satisfy rear straw board shaping needs, only very few partial straw board intensity in the place ahead is not enough like this, for the present frictional force that only relies on straw board gravity to produce to satisfy rear straw board shaping needs, can greatly reduce the waste of straw board, saved the raw materials, the economic nature is stronger;

2) the utility model discloses a damping mechanism's setting for when the length of platform is carried to the design roll-type, only need consider the cooling problem of strawboard, its length as long as can satisfy the strawboard cooling and need the casing, need not consider the not enough problem of frictional force again, and platform length is carried to the roll-type that has relatively now, and reducible 10 meters is controlled, thereby makes the length of whole production line reduce, and then has reduced the demand of production line to the factory building.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of an installation structure of the adaptive damping mechanism of the present invention;

FIG. 2 is a schematic view of the assembly structure of the pressing plate and the oil cylinder of the present invention;

fig. 3 is a hydraulic control schematic diagram of the oil cylinder of the present invention.

In the figure:

1 ┄ strawboard machine frame; 2 ┄ oil cylinder; 3 ┄ platen; 4 ┄ strawboard machine forming cavity; 5 ┄ oil tank; 6 ┄ servo overflow valve; 7 ┄ three-position four-way solenoid valve; 8 ┄ bidirectional hydraulic lock; 9 ┄ pressure sensor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Referring to fig. 1 to 2, the self-adaptive damping mechanism for the straw board machine of the present invention comprises an oil cylinder 2 mounted on a straw board machine frame 1, a piston rod of the oil cylinder 2 is fixedly connected with a pressing plate 3, and the pressing plate 3 is horizontally arranged and adjacent to an outlet of a straw board machine forming cavity 4; the oil cylinder also comprises a sensor and a PLC controller, wherein the sensor and the PLC controller can be fixed on the frame or the oil cylinder shell; the sensor is used for detecting the discharging length of the molding cavity 4 of the straw board machine, and particularly, the sensor structure can detect the length of the straw board extending out of the molding cavity, which is well known to people in the art; it is also a well known design for those skilled in the art to calculate the gravity from the length of the grass sheet and then the friction from the gravity; the sensor and the oil cylinder 2 are connected with a PLC controller, the PLC controller receives detection signals of the sensor to control output pressure of the oil cylinder 2, and specific control program design belongs to conventional design in the field.

The following is a detailed description of the pressurization control of the adaptive damping structure of the present invention:

in the prior art, the damping required for forming the rear grass plate is provided by the friction force between the front grass plate extending out of the forming cavity and the roller type conveying table, and the longer the grass plate extending out of the forming cavity is, the larger the friction force is, so that the length of the roller type conveying table on the existing grass plate machine needs to be set to be at least 30m, and the purpose of the damping is to ensure the resistance required for forming the rear grass plate; the utility model discloses in add adaptive damping mechanism, be equipped with and be used for passing the back for the pressurized clamp plate 3 of place ahead grass board, when the place ahead grass board from the shaping intracavity, the fashioned resistance of rear grass board is provided by two parts frictional force, one part is the frictional force that overhanging grass board gravity in the shaping chamber produced, another part is the frictional force that 3 pressures of clamp plate produced, so-called "self-adaptation" here is exactly along with overhanging the increase in the grass board length in shaping chamber, the frictional force that gravity produced can be bigger and bigger, and control pressure is littleer and smaller, thereby the frictional force that makes pressure produce also littleer and more, and then realize that the synthesis of two parts frictional force keeps unchangeable. It should be noted that, the problem that the strength of the front small part of the grass plate is insufficient is also existed, because the grass plate is pressed by the pressing plate 3 after the grass plate extends beyond a section of the forming cavity, the strength of the grass plate which extends beyond the forming cavity at the beginning and is matched with the pressing plate 3 is insufficient, but the strength of the rear grass plate can be ensured. After learning the structure of the present invention, the skilled person can design how to design the control program specifically, and ensure that the sum of the friction forces of the two parts is not changed, which belongs to the conventional design and is not described herein again.

In order to avoid the phenomenon that the local pressure of the pressing plate 3 is overlarge, the pressing plate 3 is connected with two oil cylinders 2 distributed along the width direction of the pressing plate, so that the uniformity of the pressing force of the pressing plate 3 can be improved.

In order to avoid the phenomena of structural damage and the like caused by inconsistent friction force applied to the width direction of the grass plate, the width of the pressing plate 3 is equal to the width of the forming cavity 4 of the grass plate machine, and the pressing plate 3 applies pressure on the width of the whole grass plate so as to ensure that the friction force applied to the width direction is equal.

Preferably, the sensor is a laser sensor.

As a further limitation of the above technical solution, an oil tank 5 is disposed in the oil cylinder 2, a servo relief valve 6 is disposed on the oil tank 5, oil in the oil tank 5 is supplied to the oil cylinder 2 through the servo relief valve 6, and a PLC controller controls the opening size of the servo relief valve 6. The hydraulic control part of the oil cylinder belongs to the conventional design in the field, and can specifically adopt a control structure shown in fig. 3, wherein the control structure comprises a three-position four-way electromagnetic valve 7, a two-way hydraulic lock 8, a pressure sensor 9 and the like.

The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a self-adaptation damping mechanism for on straw board machine which characterized in that: the device comprises an oil cylinder (2) arranged on a frame (1) of the straw board machine, wherein a piston rod of the oil cylinder (2) is fixedly connected with a pressing plate (3), and the pressing plate (3) is horizontally arranged and is adjacent to an outlet of a forming cavity (4) of the straw board machine; still include sensor and PLC controller, the sensor is used for detecting the ejection of compact length of straw board machine shaping chamber (4), and sensor and hydro-cylinder (2) all are connected with the PLC controller, thereby the output pressure of the detection signal control hydro-cylinder (2) of PLC controller receipt sensor.

2. An adaptive damping mechanism for a lawnmower as claimed in claim 1, wherein: the pressing plate (3) is connected with two oil cylinders (2) distributed along the width direction of the pressing plate.

3. An adaptive damping mechanism for a lawnmower as claimed in claim 2, wherein: the width of the pressing plate (3) is equal to that of the straw board forming cavity (4).

4. An adaptive damping mechanism for a lawnmower as claimed in claim 3, wherein: the sensor adopts a laser sensor.

5. An adaptive damping mechanism for a lawnmower according to any one of claims 1-4, wherein: the oil cylinder (2) is provided with an oil tank (5), the oil tank (5) is provided with a servo overflow valve (6), oil in the oil tank (5) is supplied to the oil cylinder (2) through the servo overflow valve (6), and the PLC controls the opening size of the servo overflow valve (6).